C++ refactoring: ak.without_parameters

src/awkward/_v2/operations/structure/ak_without_parameters.py

@@ -7,29 +7,25 @@
 
 
 def without_parameters(array, highlevel=True, behavior=None):
-    raise NotImplementedError
 
+    """
+    Args:
+        array: Data convertible into an Awkward Array.
+        highlevel (bool): If True, return an #ak.Array; otherwise, return
+            a low-level #ak.layout.Content subclass.
+        behavior (None or dict): Custom #ak.behavior for the output array, if
+            high-level.
 
-#     """
-#     Args:
-#         array: Data convertible into an Awkward Array.
-#         highlevel (bool): If True, return an #ak.Array; otherwise, return
-#             a low-level #ak.layout.Content subclass.
-#         behavior (None or dict): Custom #ak.behavior for the output array, if
-#             high-level.
+    This function returns a new array without any parameters in its
+    #ak.Array.layout, on nodes of any level of depth.
 
-#     This function returns a new array without any parameters in its
-#     #ak.Array.layout, on nodes of any level of depth.
+    Note that a "new array" is a lightweight shallow copy, not a duplication
+    of large data buffers.
+    """
+    layout = ak._v2.operations.convert.to_layout(
+        array, allow_record=True, allow_other=False
+    )
 
-#     Note that a "new array" is a lightweight shallow copy, not a duplication
-#     of large data buffers.
-#     """
-#     layout = ak._v2.operations.convert.to_layout(
-#         array, allow_record=True, allow_other=False
-#     )
+    out = layout.recursively_apply(lambda layout, **kwargs: None, keep_parameters=False)
 
-#     out = ak._v2._util.recursively_apply(
-#         layout, lambda layout: None, pass_depth=False, keep_parameters=False
-#     )
-
-#     return ak._v2._util.maybe_wrap_like(out, array, behavior, highlevel)
+    return ak._v2._util.wrap(out, behavior, highlevel)

tests/v2/test_0527-fix-unionarray-ufuncs-and-parameters-in-merging.py

@@ -78,6 +78,25 @@ def test_0459_types():
         array_isdoc
     ) != ak._v2.operations.describe.type(plain_isdoc)
 
+    assert array_plain.layout.parameters == {"__array__": "zoinks"}
+    assert (
+        ak._v2.operations.structure.without_parameters(array_plain).layout.parameters
+        == {}
+    )
+    assert plain_isdoc.layout.parameters == {"__doc__": "This is a zoink."}
+    assert (
+        ak._v2.operations.structure.without_parameters(plain_isdoc).layout.parameters
+        == {}
+    )
+    assert array_isdoc.layout.parameters == {
+        "__array__": "zoinks",
+        "__doc__": "This is a zoink.",
+    }
+    assert (
+        ak._v2.operations.structure.without_parameters(array_isdoc).layout.parameters
+        == {}
+    )
+
 
 def test_0459():
     plain_plain = ak._v2.highlevel.Array([0.0, 1.1, 2.2, 3.3, 4.4])